<template>
  <div>
        <!-- 面包屑导航 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>商品管理</el-breadcrumb-item>
            <el-breadcrumb-item>商品列表</el-breadcrumb-item>
        </el-breadcrumb>

        <!-- 卡片视图 -->
        <el-card>
            <el-row :gutter="20">
                <el-col :span="8">
                    <el-input placeholder="请输入内容" 
                    v-model="queryInfo.query"
                    clearable
                    @clear="getGoodsList">
                        <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="goAddpage">添加商品</el-button>
                </el-col>
            </el-row>

            <!-- table表格 -->
            <el-table 
            :data="goodslist"
            border 
            stripe>
                <el-table-column type="index"></el-table-column>
                <el-table-column label="商品名称" prop="goods_name"></el-table-column>
                <el-table-column label="商品价格(元)" prop="goods_price"  width="95px"></el-table-column>
                <el-table-column label="商品重量" prop="goods_weight"  width="95px"></el-table-column>
                <el-table-column label="添加时间" prop="add_time"  width="145px">
                    <template slot-scope="scope">
                        {{scope.row.add_time | dateFormat }} 
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="130px" >
                    <template slot-scope="scope" > 
                        <el-button type="primary" icon="el-icon-edit" size="mini"></el-button>
                        <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeById(scope.row.goods_id)"></el-button>
                    </template>
                </el-table-column>
            </el-table>
             <el-pagination
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
            :current-page="queryInfo.pagenum"
            :page-sizes="[5, 10, 20, 30]"
            :page-size="queryInfo.pagesize"
            layout="total, sizes, prev, pager, next, jumper"
            :total="total"
            background>
            </el-pagination>
        </el-card>
  </div>
</template>

<script>
export default {
    data(){
        return {
            // 查询参数
            queryInfo:{
                query:'',
                pagenum:1,
                pagesize:10
            },
            // 商品列表
            goodslist:[],
            // 总条数
            total:0
        }
    },
    created(){
        this.getGoodsList()
    },
    methods:{
        // 根据分页得到对应的商品列表
        async getGoodsList(){
            const {data:res} = await this.$http.get("goods",{params:this.queryInfo})
            if(res.meta.status !== 200){
               return this.$message.error('获取商品列表失败')
            }
            this.$message.success('获取商品列表成功')
            console.log('商品列表',res.data);
            this.goodslist = res.data.goods
            this.total = res.data.total

        },
        // 当前页显示条数发生变化
        handleSizeChange(newSize){
            this.queryInfo.pagesize = newSize
            this.getGoodsList()
        },
        // 页码发生变化
        handleCurrentChange(newPageNum){
            this.queryInfo.pagenum = newPageNum
            this.getGoodsList()

        },
        // 删除商品
        async removeById(id){
            const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).catch(err => err)
            if(confirmResult != 'confirm'){
                return this.$message.info('已取消删除')
            }

            const {data:res}= await this.$http.delete(`goods/${id}`)
            if(res.meta.status !==200){        
                return this.$message.error('删除失败')
            }
            this.$message.success('删除成功')
            this.getGoodsList()

        },
        goAddpage(){
            this.$router.push('/goods/add')
        }

    }
}
</script>

<style lang="less" scoped>

</style>